How they got there remains a bit of a mystery but it is presumed that they started out as exotic pets which were discarded once they outgrew their aquariums.

 
  • 怎么就到了今天这个地步,多少还是个迷。不过据推测,它们起初是被当作带有外国风情的宠物加以饲养的,不过一旦它们长到玻璃缸难以容纳时,就会被丢弃了。
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